Question: Which of the following sinuses is located deepest within the skull? Need Assignment Help? The image displays the front and side views of a human head, highlighting four types of sinuses labeled as A, B, C, and D. Sinuses located above the eyebrows are represented by the pink color and labeled as A. The yellow color indicates the sinuses located under the sella turcica and is labeled as B. The green color represents cells on either side of the ethmoid bone and is labeled as C. Sinuses on both sides of the maxillary bone are denoted by the peach color and labeled as D.